Your friend works in a lab that is studying why a particular mutant strain of Dr

Question

Your friend works in a lab that is studying why a particular mutant strain of Drosophila grows an eye on its wing. Your friend discovers that this mutant strain of Drosophila is expressing a transcription factor incorrectly. In the mutant Drosophila, this transcription factor, which is normally expressed in the primordial eye tissue, is now misexpressed in the primordial wing tissue, thus turning on transcription of the set of genes required to produce an eye in the wing primordial tissue. If this hypothesis is true, which of the following types of genetic change would most likely lead to this situation?

Explanation / Answer

Answer:- The most likely genetic change would be that the genes for eye in primordial wing tissue are normally in repressed state that is transcriptionally inactive but in mutat strain the transcriptional factor whose gene is normally inactive in primordial wing tissue but due to its activation as result of which it transcribes transcription factor required expression of protein required for eye formation. Transcriptional factor is activated when its free from repressor protein or histone modification , mutation etc.

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